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  <title>The Pair class</title>
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 <h1 class="title">The Pair class</h1>
 

 <div class="partintro"><p class="verinfo">(No version information available, might only be in Git)</p>


  <div class="section" id="ds-pair.intro">
   <h2 class="title">简介</h2>
   <p class="para">
    A pair is used by <span class="classname"><strong class="classname">Ds\Map</strong></span> to pair keys with values.
   </p>
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  <div class="section" id="ds-pair.synopsis">
   <h2 class="title">类摘要</h2>


   <div class="classsynopsis">
    <div class="ooclass"></div>


    <div class="classsynopsisinfo">
     <span class="ooclass">
      <span class="modifier">class</span> <strong class="classname">Ds\Pair</strong>
     </span>

     <span class="oointerface"><span class="modifier">implements</span> 
       <a href="class.jsonserializable.html" class="interfacename">JsonSerializable</a></span> {</div>


    <div class="classsynopsisinfo classsynopsisinfo_comment">/* 方法 */</div>
     <div class="constructorsynopsis dc-description">
   <span class="modifier">public</span> <span class="methodname"><a href="ds-pair.construct.html" class="methodname">__construct</a></span>(<span class="methodparam"><span class="type"><a href="language.types.declarations.html#language.types.declarations.mixed" class="type mixed">mixed</a></span> <code class="parameter">$key</code><span class="initializer"> = ?</span></span>, <span class="methodparam"><span class="type"><a href="language.types.declarations.html#language.types.declarations.mixed" class="type mixed">mixed</a></span> <code class="parameter">$value</code><span class="initializer"> = ?</span></span>)</div>
 
     <div class="methodsynopsis dc-description"><span class="modifier">public</span> <span class="methodname"><a href="ds-pair.clear.html" class="methodname">clear</a></span>(): <span class="type"><span class="type void">void</span></span></div>
<div class="methodsynopsis dc-description"><span class="modifier">public</span> <span class="methodname"><a href="ds-pair.copy.html" class="methodname">copy</a></span>(): <span class="type"><a href="class.ds-pair.html" class="type Ds\Pair">Ds\Pair</a></span></div>
<div class="methodsynopsis dc-description"><span class="modifier">public</span> <span class="methodname"><a href="ds-pair.isempty.html" class="methodname">isEmpty</a></span>(): <span class="type">bool</span></div>
<div class="methodsynopsis dc-description"><span class="modifier">public</span> <span class="methodname"><a href="ds-pair.toarray.html" class="methodname">toArray</a></span>(): <span class="type">array</span></div>
 
    }</div>


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<h2>目录</h2><ul class="chunklist chunklist_reference"><li><a href="ds-pair.clear.html">Ds\Pair::clear</a> — Removes all values</li><li><a href="ds-pair.construct.html">Ds\Pair::__construct</a> — Creates a new instance</li><li><a href="ds-pair.copy.html">Ds\Pair::copy</a> — Returns a shallow copy of the pair</li><li><a href="ds-pair.isempty.html">Ds\Pair::isEmpty</a> — Returns whether the pair is empty</li><li><a href="ds-pair.jsonserialize.html">Ds\Pair::jsonSerialize</a> — Returns a representation that can be converted to JSON</li><li><a href="ds-pair.toarray.html">Ds\Pair::toArray</a> — Converts the pair to an array</li></ul>
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